名校
解题方法
1 . 如图,将直角边长为
的等腰直角三角形
,沿斜边上的高
翻折,使二面角
的大小为
,翻折后
的中点为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/b5713d59-db18-4c9c-8d44-34cde1186ca1.png?resizew=318)
(Ⅰ)证明
平面
;
(Ⅱ)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd29cc627d76412c236aac6b29fa0fdf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/b5713d59-db18-4c9c-8d44-34cde1186ca1.png?resizew=318)
(Ⅰ)证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ffc6952e988d04f22f0fb2f7f0ab7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ddb7c2ca1b6bee86cb24fed02e40da2.png)
(Ⅱ)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
您最近一年使用:0次
2020-06-20更新
|
1050次组卷
|
7卷引用:贵州省贵阳市四校2021届高三上学期联合考试(一)数学(文)试题
解题方法
2 . 如图所示,点
在圆柱的上底面圆周上,四边形
为圆柱下底面的内接四边形,且
为圆柱下底面的直径,
为圆柱的母线,且
,圆柱的底面半径为1.
![](https://img.xkw.com/dksih/QBM/2022/5/28/2989280747282432/2990772703567872/STEM/ea0bf04b-485d-442b-879e-f0f5b5c3e2b6.png?resizew=140)
(1)证明:
;
(2)
,
为
的中点,点
在线段
上,且
,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e0f73b3c63084d9c032802e01f9a168.png)
![](https://img.xkw.com/dksih/QBM/2022/5/28/2989280747282432/2990772703567872/STEM/ea0bf04b-485d-442b-879e-f0f5b5c3e2b6.png?resizew=140)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecf6c62979a7aa534a191d8387a741e8.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a88c44f558705de3bcefcfc0ece96b8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/667349d99185bb045030b733352ff7fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c3764c14968ed67e0be113ad6b9cfbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31c607f8168bfc180bfb070644b85f28.png)
您最近一年使用:0次
名校
解题方法
3 . 如图,在四棱锥
中,底面
是正方形,
底面
,
,
分别为
的中点;
![](https://img.xkw.com/dksih/QBM/2021/7/15/2764646725017600/2767726646902784/STEM/848a936677f4460882042bbed95d175a.png?resizew=182)
(1)证明:直线
平面
;
(2)求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca6f0b66c8c5b3eedd7a62959b2c3eb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cf9b288c48c73463a2f214f02b6952a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cca777c664ecc22e40dff4ccae6b248.png)
![](https://img.xkw.com/dksih/QBM/2021/7/15/2764646725017600/2767726646902784/STEM/848a936677f4460882042bbed95d175a.png?resizew=182)
(1)证明:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06222ee533c2484ab25321a6abbf98cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b349c1f5c598e4aac13751d9bb47b5f.png)
您最近一年使用:0次
解题方法
4 . 如图1,等腰梯形
,
.
沿
折起得到四棱锥
(如图2),G是
的中点.
![](https://img.xkw.com/dksih/QBM/2020/10/15/2571759312560128/2573149801177088/STEM/4b76fd412c90499d871e2c5d6ef3895a.png?resizew=176)
(1)求证
平面
;
(2)当平面
平面
时,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0aeccc147f407f574f7d8efd7d0d0636.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d631f45bc652539853f236952afa5bbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0bc34d1771fb14c101911660eaa075b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://img.xkw.com/dksih/QBM/2020/10/15/2571759312560128/2573149801177088/STEM/d0f908f6fe1d43dfaf7d8c4e3ddf7666.png?resizew=216)
![](https://img.xkw.com/dksih/QBM/2020/10/15/2571759312560128/2573149801177088/STEM/4b76fd412c90499d871e2c5d6ef3895a.png?resizew=176)
(1)求证
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55537f7dbac74c17fe0dc386dcdab3fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fd45625bf31756fbaf1c415c6e5bf79.png)
(2)当平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a62a0adbe458148298b3dfb61c4373b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01ff27eea7545bb06f9472f91290c54e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0fb98facc6b8400726136deadd3f1e7.png)
您最近一年使用:0次
名校
解题方法
5 . 在长方体
中,AB=6,BC=8,
.
(1)求三棱锥
的体积;
(2)在三棱柱
内放一个体积为V的球,求V的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51d0fdc5a00ca0e857b89a7e1420df29.png)
(1)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28ebd86a076448d19401268f139b5b90.png)
(2)在三棱柱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
您最近一年使用:0次
6 . 如图,在直三棱柱
中,
,
,
,点E,F,M,N分别为
,
,
,
的中点.
![](https://img.xkw.com/dksih/QBM/2022/5/5/2972943080620032/2973580197003264/STEM/a1f43bf1-e058-429b-8526-121c8f3d3ba5.png?resizew=219)
(1)求
的值;
(2)求多面体
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71f2185273bf04c11118c7954f7ec822.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a1be17e0a3e51cde1f50f384198e71e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/209acf15985d1ea1ad86fc4a37e38c0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f4fb102b6268f60dce1f1597768853a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6655cc150ddc9deba2254780984d0024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb0628cecbfc98d390e5447d52414e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ecac2dad4cffdd971fd23deacff3fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6024fd4532f5f981deac4582c799a6ef.png)
![](https://img.xkw.com/dksih/QBM/2022/5/5/2972943080620032/2973580197003264/STEM/a1f43bf1-e058-429b-8526-121c8f3d3ba5.png?resizew=219)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/050a400ef5900c4a69b4d3270b0b4ae8.png)
(2)求多面体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c86d95e7b3d23def744dcc1daad51759.png)
您最近一年使用:0次
13-14高三·全国·课后作业
名校
7 . 如图,一个三棱柱形容器中盛有水,且侧棱AA1=8,若侧面AA1B1B水平放置时,液面恰好过AC,BC,A1C1,B1C1的中点,当底面ABC水平放置时,液面高为多少?
您最近一年使用:0次
2018-10-18更新
|
1035次组卷
|
7卷引用:【全国百强校】贵州省遵义航天高级中学2018-2019学年高二上学期第一次月考数学(理)试题
【全国百强校】贵州省遵义航天高级中学2018-2019学年高二上学期第一次月考数学(理)试题(已下线)2015高考数学理一轮配套特训:7-1空间几何体结构及三视图和直观图人教A版(2019) 必修第二册 逆袭之路 第八章 8. 3 简单几何体的表面积与体积 小结(已下线)8.3 简单几何体的表面积与体积人教B版(2019) 必修第四册 北京名校同步练习册 第十一章 立体几何初步 11.1 空间几何体 11.1.6 祖暅原理与几何体的体积(二)人教A版(2019)必修第二册课本习题 习题8.3(已下线)8.3简单几何体的表面积与体积【第一练】“上好三节课,做好三套题“高中数学素养晋级之路
解题方法
8 . 如图所示的几何体由等高的
个圆柱和
个圆柱拼接而成,点
为弧
的中点,且
四点共面
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/ff086209-9587-4d4e-a1be-792d1c68a242.png?resizew=144)
(1)证明:
平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16e5557f66d64003df388ec060554616.png)
(2)若四边形
为正方形,且四面体
的体积为
,求线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d266a04f3dc7483eddbc26c5e487db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/796cf8748bd5fdb5f6602be180e9c830.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/ff086209-9587-4d4e-a1be-792d1c68a242.png?resizew=144)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fa3c61d6c19e187b4b824b6f5610cdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16e5557f66d64003df388ec060554616.png)
(2)若四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ecc1cb55a57dde481f8dd07ab150676.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c92d220be10b55272aab5bacd9f69721.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d599cb4a589f90b0205f24c2e1fa021e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
您最近一年使用:0次
2021-03-11更新
|
443次组卷
|
3卷引用:贵州省黔东南州2021届高三高考模拟考试数学(文)试题
贵州省黔东南州2021届高三高考模拟考试数学(文)试题陕西省榆林市2021届高三下学期二模文科数学试题(已下线)解密13 空间几何体(分层训练)-【高频考点解密】2021年高考数学(文)二轮复习讲义+分层训练
解题方法
9 . 如图,
平面
,四边形
为直角梯形,
.
![](https://img.xkw.com/dksih/QBM/2021/1/18/2638885659746304/2640067072401408/STEM/79b6d77d0b404cd09d7e9aacca2c1175.png?resizew=173)
(1)证明:
.
(2)若
,点
在线段
上,且
,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48851e423f9000c3d8a49b1ad4db3d33.png)
![](https://img.xkw.com/dksih/QBM/2021/1/18/2638885659746304/2640067072401408/STEM/79b6d77d0b404cd09d7e9aacca2c1175.png?resizew=173)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8c231fb9aeaf4b73c2d835bb4c3d42b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53e4e97a4bd7675f12f73266254dd435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/297f713ddbcc4578e73c8afe3a52abfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c56fdffb50f1e47bd067d39e7ebe3c0.png)
您最近一年使用:0次
2021-01-20更新
|
421次组卷
|
2卷引用:贵州省龙里县九八五实验学校2020-2021学年高二上学期期末质量检测数学(文)试题
10 . 如图所示,在梯形CDEF中,四边形ABCD为正方形,且
,将
沿着线段AD折起,同时将
沿着线段BC折起.使得E,F两点重合为点P.
![](https://img.xkw.com/dksih/QBM/2019/12/26/2363698988974080/2364051018088448/STEM/7d4585bd-bb04-4cd5-8fbc-6c947dd1adba.png)
(1)求证:平面
平面ABCD;
(2)求点D到平面PBC的距离h.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dabe6f02012bf9ca548dbb3f86d4cff3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6830ebecddbd9759be626289c408e4f3.png)
![](https://img.xkw.com/dksih/QBM/2019/12/26/2363698988974080/2364051018088448/STEM/7d4585bd-bb04-4cd5-8fbc-6c947dd1adba.png)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4aa9084b8fe0fe05c4388d1f835587b.png)
(2)求点D到平面PBC的距离h.
您最近一年使用:0次
2019-12-27更新
|
734次组卷
|
3卷引用:贵州省贵阳市普通高中2019-2020学年高三上学期期末监测考试数学(文)试题